A331478 - cp's OEIS frontend

A331478 Irregular triangle T(n,k) = n - (s - k + 1)^2 for 1 <= k <= s, with s = floor(sqrt(n)).

n	a(n)
1	0
2	1
3	2
4	0
5	3
6	1
7	4
8	2
9	5
10	3
11	6
12	4
13	7
14	0
15	5
16	8
17	1
18	6
19	9
20	2
21	7
22	10
23	3
24	8
25	11
26	4
27	9
28	12
29	5
30	10
31	13
32	6
33	11
34	14
35	0
36	7
37	12
38	15
39	1
40	8
41	13
42	16
43	2
44	9
45	14
46	17
47	3
48	10
49	15
50	18
51	4
52	11
53	16
54	19
55	5
56	12
57	17
58	20
59	6
60	13
61	18
62	21
63	7
64	14
65	19
66	22
67	8
68	15
69	20
70	23
71	0
72	9
73	16
74	21
75	24
76	1

[0, 1, 2, 0, 3, 1, 4, 2, 5, 3, 6, 4, 7, 0, 5, 8, 1, 6, 9, 2, 7, 10, 3, 8, 11, 4, 9, 12, 5, 10, 13, 6, 11, 14, 0, 7, 12, 15, 1, 8, 13, 16, 2, 9, 14, 17, 3, 10, 15, 18, 4, 11, 16, 19, 5, 12, 17, 20, 6, 13, 18, 21, 7, 14, 19, 22, 8, 15, 20, 23, 0, 9, 16, 21, 24, 1]

cp's OEIS Frontend

A331478 Irregular triangle T(n,k) = n - (s - k + 1)^2 for 1 <= k <= s, with s = floor(sqrt(n)).

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	0
5	3
6	1
7	4
8	2
9	5
10	3
11	6
12	4
13	7
14	0
15	5
16	8
17	1
18	6
19	9
20	2
21	7
22	10
23	3
24	8
25	11
26	4
27	9
28	12
29	5
30	10
31	13
32	6
33	11
34	14
35	0
36	7
37	12
38	15
39	1
40	8
41	13
42	16
43	2
44	9
45	14
46	17
47	3
48	10
49	15
50	18
51	4
52	11
53	16
54	19
55	5
56	12
57	17
58	20
59	6
60	13
61	18
62	21
63	7
64	14
65	19
66	22
67	8
68	15
69	20
70	23
71	0
72	9
73	16
74	21
75	24
76	1

n	a(n)
1	0
2	1
3	2
4	0
5	3
6	1
7	4
8	2
9	5
10	3
11	6
12	4
13	7
14	0
15	5
16	8
17	1
18	6
19	9
20	2
21	7
22	10
23	3
24	8
25	11
26	4
27	9
28	12
29	5
30	10
31	13
32	6
33	11
34	14
35	0
36	7
37	12
38	15
39	1
40	8
41	13
42	16
43	2
44	9
45	14
46	17
47	3
48	10
49	15
50	18
51	4
52	11
53	16
54	19
55	5
56	12
57	17
58	20
59	6
60	13
61	18
62	21
63	7
64	14
65	19
66	22
67	8
68	15
69	20
70	23
71	0
72	9
73	16
74	21
75	24
76	1

n	a(n)
1	0
2	1
3	2
4	0
5	3
6	1
7	4
8	2
9	5
10	3
11	6
12	4
13	7
14	0
15	5
16	8
17	1
18	6
19	9
20	2
21	7
22	10
23	3
24	8
25	11
26	4
27	9
28	12
29	5
30	10
31	13
32	6
33	11
34	14
35	0
36	7
37	12
38	15
39	1
40	8
41	13
42	16
43	2
44	9
45	14
46	17
47	3
48	10
49	15
50	18
51	4
52	11
53	16
54	19
55	5
56	12
57	17
58	20
59	6
60	13
61	18
62	21
63	7
64	14
65	19
66	22
67	8
68	15
69	20
70	23
71	0
72	9
73	16
74	21
75	24
76	1